Sofa



FIG. 1 is a front perspective view of a sofa showing my new design with exemplary pillows shown for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is another rear perspective view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a first side view thereof;

FIG. 7 is a second side view thereof;

FIG. 8 is a front perspective view thereof showing the sofa in an alternate configuration;

FIG. 9 is a front view thereof;

FIG. 10 is a front perspective view thereof showing the sofa in another alternate configuration;

FIG. 11 is a front view thereof;

FIG. 12 is another front view thereof;

FIG. 13 is a front perspective view thereof showing the sofa in another alternate configuration;

FIG. 14 is a front perspective view thereof showing the sofa in another alternate configuration;

FIG. 15 is a front view thereof;

FIG. 16 is a side view thereof;

FIG. 17 is a side view thereof;

FIG. 18 is a top view thereof; and,

FIG. 19 is a bottom view thereof. 

I claim, the ornamental design for a sofa, as shown and described. 